. >> reporter: the fbi has sent a team to libya to investigate the benghazi attack alongside local authorities to examine the possibility of al qaeda or other terrorist groups' involvement. a high ranking u.s. official has characterized the attack as elaborate. the assault fell on the 11th anniversary of the 9/11 terrorist attacks in the u.s. president barack obama reacted sharply. >> the united states condemns in the strongest terms this outrageous and shocking attack. we will work with the libyan government to bring to justice the killers who attacked our people. >> reporter: during a phone call with the president of the libya's national assembly mohamed magarief, obama asked libyan authorities to secure the safety of u.s. embassy staff. the leaders confirmed that american and libyan officials will cooperate to identify the assailants and bring them to justice. at the same time, the obama administration is apparently trying to show consideration for protesters in the arab world. the president criticized the american-made film that angered many muslims. the chairman of the u.s. joint chiefs o